D&J Precision DJPCH100205 Stage 1 Performance Cylinder Head With Fire Rings (2007.5-2018 6.7L Cummins)

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The D&J Precision Machine Stage 1 Performance Cylinder Head With Fire Rings DJPCH100205 is a performance-oriented direct replacement cylinder head for your 6.7L Dodge Ram, designed to improve airflow capacity and valvetrain stability while maintaining compatibility with factory-style components. Built for durability under higher cylinder pressures, this fully assembled head supports both stock replacement and upgraded engine applications. 

This Stage 1 cylinder head features CNC-ported runners to improve airflow efficiency and support increased power output compared to stock castings. Upgraded 105-pound valve springs provide improved valve control in higher boost and RPM conditions, while stainless steel valves and hardened valve seats increase resistance to heat and wear in demanding operating environments.

Designed for applications requiring improved head sealing under elevated cylinder pressures, this version includes a matched fire ring gasket. Each cylinder head is assembled with new components and prepared for installation, making it suitable for daily-driven trucks as well as performance builds requiring increased reliability. Manufactured by D&J Precision Machine, this cylinder head provides a stronger alternative to stock castings while maintaining direct-fit installation.

Features:

• Includes Matched Fire Ring Gasket
• Direct Bolt-on Replacement Cylinder Head
• Fully Assembled For Installation Convenience
• Stainless Steel Valves For Improved Durability
• Hardened Valve Seats For Extended Service Life
• CNC-Ported Runners For Improved Airflow Efficiency
• 105-Poound Valve Springs For Increased Valve Control
• Designed For 2007-2018 Ram 6.7L Cummins Applications